Silencer for firearms



Sept. 2l, 1948. B. WALKER sILENcEn Fon FIREARMS Filed Jan. 31. 1945 D .7/VV/V/f//V/ Emu nk@ Wnlker se, afmvf [4m Patented Sept. 2l, 1948 UjNlTEDSTATES PATENT OFFICE 2,449,571 sILENoER Foa HREARMS Brooks Walker.Piedmont, Calif. Application January 31, 194s, serial No. 575,528 4Claims. (Cl. 89-14) `(Granted under the act of amended April 30, 1928;

The invention described herein may be manufactured and used by or forthe Government for governmental purposes without the payment to me ofany royalty thereon.

This invention relates to an improved silencer vfor rearms and isespecially adapted for use on snipers rifles.

More particularly, it is an object of the invention to provide asilencer capable of being readily applied to or detached from a riiieand which will effectively eliminate the audible report of the weapon.

Another object of the invention is to provide a silencer which will alsofunction as a muzzle brake.

A further object of the invention is to provide a silencer having asealing element in the form of a resilient, penetrable mass throughwhich the projectile passes and which is substantially seifsealingbehind the projectile to thereby prevent the escape of the expandinggases and to thus eliminate the audible report.

Still another object of the invention is to provide a novel means ofsecurely mounting the penetrable mass in a detachable manner so that itcan readily be replaced.

Other objects and advantages of the invention will hereinafter becomemore fully apparent from the following description of the drawing, whichillustrates preferred embodiments of the invention, and wherein:

Figure 1 is a longitudinal central sectional view of one form of thesilencer shown detachably mounted on the muzzle end of a rille;

Fig. 2 is a cross sectional view of the silencer taken substantiallyalong the plane as indicated by the line 2--2 of Figure 1;

Figure 3 is an end view in elevation looking toward the outer end of thesilencer; and

Figure 4 is a view similarto Figure 1 of another form of the invention.f

Referring more particularly to the drawing, wherein like referencecharacters designate like or corresponding parts throughout thedifferent views, 5 designates a barrel of a conventional rie, the muzzleend of which is externally threaded as seen at 5.

In the embodiment of the invention illustrated in Figures l to 3, 1designates generally the silencer in its entirety and which includes ahollow body 8 having a restricted bore 9 at its inner end. The outer endof bore 9 is reamed out and internally threaded to detachably engage thethreaded portion 6 for detachably mounting the silencer 'I on the riflebarrel 5. The bore 9 is March s, isss, as] 37o o. G. 757) axiallyaligned with the bore of the barrel 5 and is of a greater diameter, asseen in Figure l. Body 8, adjacent its opposite end, is provided with aninwardly extending annular shoulder I0 which extends into the hollowinterior thereof. A relatively thick block of a penetrable,substantially self-sealing material, such as rubber, designated II, issurrounded by a peripheral band I2 of a rigid material which is suitablybonded or otherwise secured to its outer edge. The block I I ts into andcloses the open outer end of the housing 8 and the band or ring I2 hasits inner edge bearing against the shoulder I0. On the outerr side ofthe block I I, body 8 is internally threaded to receive an annular nutI3 which bears against the outer edge of the band I2 to combine with theshoulder I0 to detachably fix the block II `securely in the open outerend of the body 8.

A plurality of rearwardly dished disks I4 are mounted on bolts I5 andare held in spaced apart relationship by spacing sleeves I6 ywhich arecarried by the bolts I5 and which are disposed between the disks I4. Theinner end of the body 8 is provided with internally threaded sockets I1that receive the threaded ends of the bolts I5 to thereby detachablymount the disks I4 in the body 8. Disks I4 are provided with alignedcentral openings I8 of substantially the same diameter as the opening 9which is in alignment therewith. The disks I4, bolts I5 and spacers IBcombine to form a muzzle brake.

The body 8 is provided with an enlargement on its under side having aninternally threaded outlet or opening I9 to receive the externallythreaded open end of a cylinder 20, the opposite end of which is closed.

In Figure 4, another simpler form of the invention is disclosed.including a hollow body 2I which is substantially smaller in diameterthan the body 8 and which is provided with an inner end having arestricted opening 22, the outer end `of which is reamed out andinternally threaded to detachably engage an annular socket type nut oranged ring 23 which is provided with a restricted opening24 in its outerend. The penetrable block II and its encompassing band I2 are mounted inthe socket nut 23 and the inner edge of the ring I2 bears against theouter end of the hollow body 2l and its outer edge bears against theinwardly extending annular shoulder or flange of the nut 23, formed byopening 24. Hollow body 2I is provided with a threaded opening 25 in itsside wall preferably in its under side to receive and engage theup-turned, externally anfratti c threaded open'encloi a cylindert, theopposite endlowhichlsclosed.y

` From the foregoing it will be readily apparent vthat when a projectileis reol through the barrel s 5, it will pass through opening and thechem f ings iii and centrally through the penetrable mass i Il forminganopeningtherein which, due to the c c resiliency ofthe block Mplssubstantially smaller in diameter than the projectile, producing theopening,v and` which will substantially seal or I close behind theprojectile tov prevent escape :ofy

the expanding,propelling gases. Disks I# will act i f vas a muzzlefbrakeand expanding gases, prevented from escape fromthe body 0 by the block II, will i escape through the spaces between the disks It and intotheouterportion of the body 8 and the gas trap cylinder 20. The body' 8 andcylinder y20 outer end of said body and engaging the ring to s removablyattach the blockand ring to said body,

and a shoulder on said body'againstwhich the 2. In a silencerattachmentfor a nrearm: havi lng a rified barrel, a hollow generallycylindrical body adapted tovbe secured to the muzzleofisaid f barrelasan extension thereof, said body having an open end remote from saidmuzzle and an f internalannular ange adlacent said end, a disc c f oirubber, a metallic band bonded to the periphery of said disc, saidbandand disc fitting within said body against said flange, to closek saidopen end, c and aring adapted to threadedly engage said body toremovably hold said disc and band f in contact with said ange.

are of sufllcient size to allow for sumcient expan f sion of thepropelling gases, so that the major:

kportion of the gases do not follow theprojectilein passingthrough theblock II. 'The gases will escape kfrom the body 8 and the cylinder 20bacll: I through the barrel''and outr through ther breech,y I i notshown, ofthe weapon when the bolt is opened in additionto their limitedescape from thek silencer directly tothe atnficsphere.r I I, ifdesired,k can be initiallyr provided with` a small opening for thepassage of theiprojectilai but this openingv can bevequally :well formedby the first projectile .passing therethrough. In

order for the silencer 1 to function most effec@ The I block I 3. In asilencer attachment'forfa rearm having a barrel, a generally cylindricalhollow body adapted to be secured to the muzzle of said barrel 'as kan'extension'ther'eon said body being closed except for ytheend remotefrom said muzzle, adisc f c of rubber, a. continuousmetallicbandbondedito the periphery of said idisc, vsaid disck and band beingadapted to fit over the ropen end of said body, v f andk a ring adaptedto be threaded on said bodyk adjacent its open end, said ring having aninternal Lperipheral ange to engage said rdisc and band and removablysecure the same over the end of said body asa closuretherefor.

tively for substantially eliminating all sound incii the weapon shouldbe stepped down to below the fired.

f In the embodiment of the invention disclosed in yFigure 4, thesilencer functionsthe rsaule except that the parts forming the muzzlebrake and including disks I4, bolts I5 and spacers I0 are eliminated.

Various other modifications and changes are contemplated and mayobviously be resorted to, Without departing from the spirit and scope ofthe invention as hereafter defined by the appended claims.

I claim:

1. In a silencer attachment for a rearm having a rifled barrel, saidattachment comprising a hollow body adapted to be connected to themuzzle of said barrel as a continuation thereof and. having a centralaxis, a block of resilient material, a rigid ring bonded to theperiphery of said block. a removable retaining member mounted in the ydent to firing the weapon, the muzzle velocity of f Number I ThefollowingA 'references ralityof bolts,circumferentlally spaced about andextending parallel with said central axis, each bolt being supportedatone enclin said body, a plurality of rearwardly-:dished discs mounted'on said,y bolts,iand-spacersmounted on said bolts to n maintain saiddiscs in spaced relation. f

BROOKS WALKER.

REFERENCESCITED ille of this patent:

UNITED STATES PATENTS Name Date Stinson May 24, 1910 Thurler Aug. 15,1911 Carroll July 4, 1916 Wildner July 17, 1923 Heare Aug. ll, 1942FOREIGN PATENTS Country Date Germany Jan. 7, 1920 Germany Dec. 20, 1919France June 22, 1936 Austria Nov. 25, 1925 Number are of record ink the

